Breivik wrote: “Other inmates have access to adult games while I only have the right to play less interesting kids games. One example is "Rayman Revolution", a game aimed at three year olds.

“You've put me in hell ... and I won't manage to survive that long. You are killing me.

“If I die, all of Europe's right-wing extremists will know exactly who it was that tortured me to death ... That could have consequences for certain individuals in the short term but also when Norway is once again ruled by a fascist regime in 13 to 40 years from now.”

The 35-year-old also asked for a comfier arm chair and for his weekly allowance of 300 Kroner to be doubled.

The preliminary investigation was closed on Monday. Breivik was recently moved from Ila prison to Telemark prison in Skien.

Police commissioner Ingrid Wirum told AFP: “We have concluded that neither the prison in Ila nor the people mentioned in the complaint are guilty of any wrongdoing.”

Lawyer Tord Jordet said: “He noted that the case has been closed despite significant documentation which demonstrates the violation of European prison regulations and human rights.